Cheek microphone



Jam 30, 1931.

I E. NOLK; cHEEK mzcndraoun Filed Sept. 23-, 1929 cqooml I In . I." Illi 5.1 llll W n E w I u 9 which is displaceable. In order that the bars Patented June 30,; 193-1 nnnsrnorxn, oFrERLIN HALENSEE, ja s a ag'reassessa 7 AKTIENGESELLSCHAFT, F wnmvnnwnnx srnnnivssrAnm, m en BnnLnv,

MANY

Application filed September 23, 1929,5eria1 no. 394,4s'a','ai1qi1ie eifiiany zraaua aa 1929.,

It is known to effect the transformation of acoustic oscillations of the human voice into electrical current oscillations by means of a microphone, which is pressed to the throat near the larynx; These laryngapho-nes are chiefly used wherever, for example, in engine rooms, aeroplane pilots seat and the like, the extraneous noises are so loud that they drown the human voice. But thelaryngaphone has the'drawback that it much molests the user, furthermore clearness is in-" complete because gutteral sounds can be clearly understood onlyfby those much practiced therein.

According to the invention the acousticoscillations'of the voice are so receivedthat a sound receiving ,devlce- (microphone) 1s applied to the cheek. vTests have, demonstrated that this arrangement of the micro-. phone much improves the transmission of sound. Furthermore itis easy to fix the cheek microphone for example to the head covering and when it is worn forsome time,

it molests the wearer less than a laryngaphone, whichusually lies close to the throat by means of a band surrounding the throat. In addition it is easy to arrange that it only lies close to the check when conversation p 7 is taking place, but at other times only slightl 'tou'ches the cheek orwhen not in use is swung away from the cheek, in any manner. Preferably the cheek'microphone is fixed to an arm or the like, which is fixed to the headcovering by means of a spring andpref erablyis adjustably fitted. Especially when: used with divers or airmenshelmets, uni form caps or the like is it advantageous to provide a bar, to which the cheek microphone can be fitted by means of a spring'arm,

may conform better tothe shape of the head,

They can also be fitted to the holding device ing isfitted tothe. supporting same of ahead receiver for caps, helmet s orthe like.

- (Fig; 2 shows a similar constructionywhere a showsthe same device in section r .tion 'and-pl'anviewsanexample of tli'efcheek I microphone having afdevice forswinging'it away when not in use. t Parts fun'ctloning n slmilarfman'ner have the 1 same designation in; all the figuresi Inthearrangement-according toFign-l two '1. parallel spring "bars; '1', 1-, which preferably comprise wire or the like wound spirally, are

c rnbinecl byj f' the connecting strips 2, m form a fr-ame: [Thisffraime is fixed to head at the side at the height of-the ear, this being donejiorexainplebysewing'thejslot 8 there l1 t 'o'; The head receiveris provided; withrings to slide along the bars 1,; l 2 'so" that it, can,

be brought into a convenient positionj A s1id'ingring14,;which is provided at the sup ortin'g arm 5' of the microphone 4,- is connected tQf the sliding deviceof the head; re ce'i'ver' tby' meansoffthe spiral spring 7 The miero honea is searr-anged that it liesfo'r i the cheek when head covering has; been When-*it isdesirable' that the head receiver and microphone beseparately brought'in'to a v5. 3 This' '-'terminates in a ring, which enables it t'oslide "along the bar 9. 'Preferably the as I suitable position, a constructionof the kind i bar 9 is'fixedto the lowercross fpiece'Q of the Strike P i silpp ng arme-zof hema shown 'dotted-jinz'the Fig. 3.] I Only; one put ting. on the head covering, a does the support arm 5 reach its p'ensioned position,iso that?the..-microph0newthen lies: cheek with .a slighti pressure.

50 Fig. 1 shows a cheek microphone, which. -:';Aslshown;in Fig.4,th sliding base ine I v i .t-. lu u I they can likewise be made up of sprmgs; framesuppor' mg the recelver When not-1n c'r'ophone 4" assumes (the relaxed 'positio'n J against the microphone can also be fitted at the side of the bars 1, 1' of the head receiver. In this example the supporting arm 5 of the microphone at is connected to the sliding ring 14 by means of a hinge 15. The sliding ring 14 has a spring 7, which presses, the arm 5. and the microphone 4 against the cheek.

Finally the Figs. 5 and 6 show in side elevation and plan a tilting device for the microphone. Its purpose is to lift the microphone off the cheek when not in use. By means of the sliding ring 1 1, the arm 5 can be pushed along the bar 9 which is only partially shown. The microphone arm 5 is hinged onto the arm 5. A tension spring 10 is tensioned between the extension pieces 12 and 13 of the two arms. This spring holds the microphone 4 either in the position shown by full or dotted lines. In the former position the microphone is pressed against the cheek with a light spring pressure, while in the latter position its does not touch the cheek. This arrangement has the advantage that it enables the microphone to be placed against the check only for the duration of a conversation, so that during the. rest of the, time it in no Way hinders the user of the cheek microphone.

What is claimed is:

1. In combination with a support for connection with a head piece, a telephone receiver adjustabl-y connected to said support, so that the receiver may be brought into close proximity with the ear of the wearer of the head piece, a telephone transmitter also adjustably connected to said support so'thatthe transmitter maybe brough against the cheek of the wearer, and auxiliary means for re,- moving the transmitter away from the cheek while not. in use.

2. In combination, a. support for connection with a head-piece, a telephone receiver adjustably secured to said support, a telephone transmitter also adjustably secured to said support, and means for holding said transmitter under tension against the cheek of the wearer of the head piece.

3. In combination, a plurality of vertical members. provided with cross members to form a unit and for usein holding said unit to a head piece, a receiver secured to and vertically movable on certain of said vertical members, an arm secured to one of said members and vertically movable thereon, and a spring for selectively maintaining the transmitter into: or out of talking position.

4. In an arrangement for communication between aviators or the like, a transmitter, and a framework upon which said transmitter is adjustably and flexibly mounted to pressv lightly against the check of the user when. in. talking position.

5. In an. arrangement for communication between aviators or the like, a: pair-of verti: cally-disposedbars for attachment toa headpiece, a receiver slidably mounted on said bars to enable the receiver to be properly positioned with respect to the users ear, and a ERNST NoLKE. 

